Are you getting any error codes?
Have you tried a hard reset?
I suggest accessing the recovery media (If using Windows version):
1- If Windows boots, from Windows Start, type in Recovery and select Recovery Options. See
http://windows.microsoft.com/en-us/windows-8/restore-refresh-reset-pc for complete details on how
to use the recovery options.
2- If Windows fails to boot, the recovery process should automatically start.
3- If Recovery does not automatically start, you can try to initiate it as follows:
-. Press F8 during boot (when you see the prompt “F8 to Activate Windows 8.1 Recovery
2. Follow the recovery steps.
You may get more information here http://download.intel.com/support/motherboards/desktop/stck1a32wfc/sb/stck1a32wfc_eng_userguide01.pdf
Please post your results here.